The Astronomer may refer to:
* ''
Vita Hludovici'' or the "Limousin Astronomer", the anonymous author of the Vita Hludovici, a biography of Holy Roman Emperor Louis the Pious
*
''The Astronomer'' (Vermeer), a 1668 oil painting by the 17th century Dutch painter Johannes Vermeer
*
The Astronomer, a character in the ''Wild Cards'' book series
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